/*
 * Copyright (c) Nordic Semiconductor ASA
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 *   3. Neither the name of Nordic Semiconductor ASA nor the names of other
 *   contributors to this software may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 *   4. This software must only be used in a processor manufactured by Nordic
 *   Semiconductor ASA, or in a processor manufactured by a third party that
 *   is used in combination with a processor manufactured by Nordic Semiconductor.
 *
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef NRF_SVC__
#define NRF_SVC__

#include "stdint.h"

#ifdef __cplusplus
extern "C"
{
#endif

#ifdef SVCALL_AS_NORMAL_FUNCTION
#define SVCALL(number, return_type, signature) return_type signature
#else

#ifndef SVCALL
#if defined(__CC_ARM)
#define SVCALL(number, return_type, signature) return_type __svc(number) signature
#elif defined(__GNUC__)
#ifdef __cplusplus
#define GCC_CAST_CPP (uint8_t)
#else
#define GCC_CAST_CPP
#endif
#define SVCALL(number, return_type, signature)                                                                                                                                                         \
    _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") __attribute__((naked)) __attribute__((unused)) static return_type signature                                     \
    {                                                                                                                                                                                                  \
        __asm("svc %0\n"                                                                                                                                                                               \
              "bx r14"                                                                                                                                                                                 \
              :                                                                                                                                                                                        \
              : "I"(GCC_CAST_CPP number)                                                                                                                                                               \
              : "r0");                                                                                                                                                                                 \
    }                                                                                                                                                                                                  \
    _Pragma("GCC diagnostic pop")

#elif defined(__ICCARM__)
#define PRAGMA(x) _Pragma(#x)
#define SVCALL(number, return_type, signature)                                                                                                                                                         \
    PRAGMA(swi_number = (number))                                                                                                                                                                      \
    __swi return_type signature;
#else
#define SVCALL(number, return_type, signature) return_type signature
#endif
#endif // SVCALL

#endif // SVCALL_AS_NORMAL_FUNCTION

#ifdef __cplusplus
}
#endif
#endif // NRF_SVC__
